Serial Interface

The system has two 16C550 UART compatible serial ports (COM1 and COM2) integrated on the I/O controller. The serial ports support the standard RS-232C interface. The buffered high-speed serial ports support transfer rates up to

115.2KB. These ports allow the installation of high-speed serial devices for faster data transfer rates.

Sets of I/O addresses for the two channels are given in the following table (see Section 2, “System Configuration,” for interrupt levels). Soft-selectable base addresses are 3F8h, 2F8h, 3E8h, and 2E8h.

Serial Port 1 and Serial Port 2 I/O Addresses

Starting I/O Address

Port

3F8

COM1

2F8

COM2

3E8

COM3

2E8

COM4

3F8

COM1

2F8

COM2

3E8

COM3

2E8

COM4

 

 

See Section 2, “System Configuration,” for information on resetting the port through the BIOS Setup utility. See Section 9, “Specifications,” for the serial interface specifications.

Serial interface signals are output through the system board’s 9-pin, D-subconnectors. The connectors are located at the back of the system unit.

USB Interface

The Universal Serial Bus (USB) ports allow new Plug and Play serial devices to be added without having to open the system. One USB device may be plugged into each USB port for direct system connection. With a hub and the proper cabling, up to 127 USB devices per port can be addressed by the system. The USB determines system resources for each peripheral and assigns them without user intervention. Boot support for a USB keyboard is present so the system can be booted with a USB keyboard instead of a standard keyboard.

Graphics Capabilities

The system supports AGP boards and PCI graphics boards. A PCI graphics board installs in one of the computer’s PCI expansion slots. An AGP board installs in the system board’s AGP slot.

System Board 4-15

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NEC VT 300i manual Serial Interface, USB Interface, Graphics Capabilities, Serial Port 1 and Serial Port 2 I/O Addresses

VT 300i specifications

The NEC VT 300i is a versatile and compact LCD projector designed for educational environments and business presentations. With its impressive combination of features and user-friendly design, the VT 300i has made a mark as a reliable choice for professionals and educators alike.

One of the standout features of the VT 300i is its brightness. With a robust output of up to 3,000 ANSI lumens, the projector ensures that images are clear and vivid, even in well-lit rooms. This brightness level allows users to deliver impactful presentations without the concern of image washout due to ambient light conditions. Coupled with a high contrast ratio of 400:1, users can expect sharp, detailed images that enhance the overall viewing experience.

The VT 300i showcases advanced DLP projection technology, which is known for producing sharp images with excellent color accuracy. The inclusion of NEC’s proprietary Intelligent Auto Setup feature allows the projector to adjust to various input sources automatically, making setup quick and hassle-free. This ensures that even those who may not be tech-savvy can operate the device with ease.

Another notable characteristic is the VT 300i’s portability. Weighing in at a little over 5 pounds and featuring a compact design, the projector is easy to transport between different locations. This portability is further enhanced by its integrated carrying handle and durable casing, making it suitable for frequent travel.

The connectivity options of the VT 300i also cater to modern technology needs. It includes multiple input terminals, such as HDMI, VGA, and USB, enabling seamless integration with various devices like laptops, tablets, and other media players. Additionally, it supports both wired and wireless presentations, making it versatile for different presentation settings.

User-friendliness extends to the maintenance aspect as well. The VT 300i incorporates an easily accessible filter and lamp compartment, simplifying the process of replacements and ensuring minimal downtime. With a lamp life of up to 5,000 hours in eco mode, it offers longevity and cost-effectiveness.

In conclusion, the NEC VT 300i stands out with its combination of brightness, advanced projection technology, and user-friendly features. Whether in an educational setting or a business meeting, it offers reliability and quality, making it a popular choice for users seeking a competent and portable projector.